i think that's frightening and endangers u.s. officials overseas, endangers u.s. soldiers overseas. and i think it's something that we as journalists must cover. >> host: page 218 of amy goodman's recent book, "the silenced majority," president obama spoke at the opening of the mlk memorial here in washington d.c. amy goodman writes: what obama left unsaid is that king, were he alive, would most likely be protesting obama administration policies. we have an hour and a half left with our guest this month on "in depth," amy goodman. our producer, tonya davis, often sends the authors that we have on the program a series of questions, and she sent amy a series of questions as well. amy goodman provided answers, and we want to show those to you now. >> host: amy goodman, one and a half hours left in our program today, and this is an e-mail from robert holdman, mdn pueblo, colorado. given the words spoken by president obama during the 2008 and 2012 campaigns, are you disappointed by his actions? will the u.s. ever adopt a single-payer health care system? >> guest: very important question.